myfaces-html5-core/src/main/java/org/apache/myfaces/html5/component/util/ComponentUtils.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.myfaces.html5.component.util;

import javax.faces.component.NamingContainer;
import javax.faces.component.UIComponent;
import javax.faces.component.UIViewRoot;

public class ComponentUtils {

    public static UIComponent findParentNamingContainer(UIComponent component, boolean returnRootIfNotFound)
    {
        UIComponent parent = component.getParent();
        if (returnRootIfNotFound && parent == null)
        {
            return component;
        }
        while (parent != null)
        {
            if (parent instanceof NamingContainer)
                return parent;
            if (returnRootIfNotFound)
            {
                UIComponent nextParent = parent.getParent();
                if (nextParent == null)
                {
                    return parent; // Root
                }
                parent = nextParent;
            }
            else
            {
                parent = parent.getParent();
            }
        }
        return null;
    }

    //copied from org.apache.myfaces.commons.exporter.util.ComponentUtils
    public static String getPathToComponent(UIComponent component) {
        StringBuffer buf = new StringBuffer();

        if (component == null)
        {
            buf.append("{Component-Path : ");
            buf.append("[null]}");
            return buf.toString();
        }

        getPathToComponent(component, buf);

        buf.insert(0, "{Component-Path : ");
        buf.append("}");

        return buf.toString();
    }

    //copied from org.apache.myfaces.commons.exporter.util.ComponentUtils
    private static void getPathToComponent(UIComponent component,
            StringBuffer buf) {

        if (component == null)
            return;

        StringBuffer intBuf = new StringBuffer();

        intBuf.append("[Class: ");
        intBuf.append(component.getClass().getName());
        if (component instanceof UIViewRoot)
        {
            intBuf.append(",ViewId: ");
            intBuf.append(((UIViewRoot) component).getViewId());
        }
        else
        {
            intBuf.append(",Id: ");
            intBuf.append(component.getId());
        }
        intBuf.append("]");

        buf.insert(0, intBuf.toString());

        getPathToComponent(component.getParent(), buf);
    }

}